Roundhouse

Base Token Metadata

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DataLiveeip155:8453Exactvia cdp
https://api.zfinia.com/x402/v1/base-token-metadata
Baseerc20Token metadataDecimalsOnchain
Calls · 30d
2→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 5 snapshots so far.
$25.30
Verified settled volume
255 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0060
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-05 07:32Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x25e8245f07d5e4873987293dad666afbe56a9608

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
      "amount": "6000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://api.zfinia.com/x402/v1/base-token-metadata",
    "tags": [
      "base",
      "erc20",
      "token metadata",
      "decimals",
      "onchain"
    ],
    "mimeType": "application/json",
    "description": "Read a Base token name, symbol, decimals and total supply in one call. Handles tokens that return a bytes32 name or symbol instead of a string, which is the case that breaks naive decoders. Fields the contract does not implement come back null and are listed, rather than guessed at. Refuses an address with no contract.",
    "serviceName": "Base Token Metadata"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "token": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "name": "USD Coin",
            "chain": "base",
            "token": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
            "symbol": "USDC",
            "chain_id": 8453,
            "decimals": 6,
            "rpc_calls": 7,
            "block_hash": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
            "request_id": "example-request",
            "service_id": "base_token_metadata",
            "block_number": "51000000",
            "service_version": "1.0.0",
            "total_supply_raw": "2500000000000",
            "unreadable_fields": []
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "token"
                ],
                "properties": {
                  "token": {
                    "type": "string",
                    "pattern": "^0x[0-9a-fA-F]{40}$",
                    "description": "Token contract address."
                  }
                },
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "request_id",
                  "service_id",
                  "service_version",
                  "chain",
                  "chain_id",
                  "block_number",
                  "block_hash",
                  "rpc_calls",
                  "token",
                  "name",
                  "symbol",
                  "decimals",
                  "total_supply_raw",
                  "unreadable_fields"
                ],
                "properties": {
                  "name": {
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "chain": {
                    "const": "base"
                  },
                  "token": {
                    "type": "string"
                  },
                  "symbol": {
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "chain_id": {
                    "const": 8453
                  },
                  "decimals": {
                    "type": [
                      "integer",
                      "null"
                    ]
                  },
                  "rpc_calls": {
                    "type": "integer",
                    "description": "Upstream RPC calls this response cost."
                  },
                  "block_hash": {
                    "type": "string",
                    "description": "Hash of that block."
                  },
                  "request_id": {
                    "type": "string",
                    "description": "Delivery request identifier; also returned in x-foundry-request-id."
                  },
                  "service_id": {
                    "type": "string",
                    "description": "Canonical service identifier."
                  },
                  "block_number": {
                    "type": "string",
                    "description": "Decimal block height every value in this response was read at."
                  },
                  "service_version": {
                    "type": "string",
                    "description": "Version of the invoked service."
                  },
                  "total_supply_raw": {
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "unreadable_fields": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    }
                  }
                },
                "additionalProperties": false
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.006USDC≈ $0.006 USD
on Base · exact scheme

Pay 0.006 USDC on Base to 0x25e8…a9608. The signed payment is good for 1 minute.

Paid to
0x25e8…a9608
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
6000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
    "amount": "6000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "token": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "name": "USD Coin",
          "chain": "base",
          "token": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
          "symbol": "USDC",
          "chain_id": 8453,
          "decimals": 6,
          "rpc_calls": 7,
          "block_hash": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
          "request_id": "example-request",
          "service_id": "base_token_metadata",
          "block_number": "51000000",
          "service_version": "1.0.0",
          "total_supply_raw": "2500000000000",
          "unreadable_fields": []
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "token"
              ],
              "properties": {
                "token": {
                  "type": "string",
                  "pattern": "^0x[0-9a-fA-F]{40}$"
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-05 07:32Z
Last indexed by Roundhouse
2026-10-06 00:50Z
Last enriched (probe, favicon, geo)
2026-10-02 08:15Z
x402 version
2
Max timeout
60s
Liveness probe
HTTP 402
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 5 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service Base Token Metadata and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Base%20Token%20Metadata'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://api.zfinia.com/x402/v1/base-token-metadata, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.